﻿#region License
/******************************************************************************
* Copyright 2018-2020 The AutoCore Authors. All Rights Reserved.
* 
* Licensed under the GNU Lesser General Public License, Version 3.0 (the "License"); 
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* 
* https://www.gnu.org/licenses/lgpl-3.0.html
* 
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*****************************************************************************/
#endregion


using UnityEngine;

namespace AutoCore.MapToolbox.PCL
{
    [ExecuteInEditMode]
    public class AutoSwitchTopView : MonoBehaviour
    {
#if UNITY_EDITOR
        int lastUpdatedAt;
        private void OnEnable() => UnityEditor.EditorApplication.update += EditorUpdate;
        private void OnDisable() => UnityEditor.EditorApplication.update -= EditorUpdate;
        private void EditorUpdate()
        {
            if (lastUpdatedAt != (int)Time.realtimeSinceStartup)
            {
                lastUpdatedAt = (int)Time.realtimeSinceStartup;
                Quaternion target;
                if (UnityEditor.SceneView.lastActiveSceneView.in2DMode)
                {
                    target = Quaternion.Euler(-90, 0, 0);
                }
                else
                {
                    target = Quaternion.Euler(0, 0, 0);
                }
                if (transform.localRotation != target)
                {
                    transform.localRotation = target;
                }
            }
        }
#endif
    }
}